QUICK START GUIDE FOR DEMONSTRATION CIRCUITS 1071
MAIN/CAM LED CONTROLLER
LTC3210-2/LTC3210-3
4
plays are updated to the present settings on
the demo control window. This is beneficial
when power is initially applied to the demo
board, the ribbon cable has been discon-
nected, or when the PIC RESET push button
has been depressed.
GRADATION Cycle Button –
This button
may be selected to start or stop the
GRADATION Cycle. The GRADATION Cycle
cycles through the brightness levels of all the
LEDs starting from the lowest to the highest
intensity of the Main display and then back to
the lowest. Then it cycles through the intensi-
ties of the CAM display, and then both dis-
plays. To increase the LED intensity, the en-
able pins are held low for the set PULSE TSD
time prior to the first pulse of each step. After
the highest intensity is reached, the intensity
is then decreased by a single low pulse equal
to the PULSE TOFF time for each step. This
pulse decrements the internal counter by one
from the previous setting. This is done until
the lowest setting is reached. The gradation
cycle is repeated until the GRADATION Cycle
button is selected again or until the LEDS
OFF button is selected.
LEDS OFF Button –
This button turns off all
of the LEDs and turns off GRADATION Cycle.
PIC RESET Push Button –
This button is lo-
cated on the DC1071 demo board. It Resets
the PIC when depressed. The reset button will
not update or change the demo control win-
dow. The UPDATE
button may be used to up-
date the PIC to the current demo control win-
dow settings.
